[PD] fish eye camera distortion correction

[Csaba Láng]

Thanks for the ideas.
Luckily I will snap the pix just once a second or two. Hope the processor
can handle it.
Which correction is easier, curve3d or the shader?

On Wed, 17 Jul 2019 at 21:04, Jack <jack at rybn.org> wrote:

> Sure, use a framebuffer with [gemframebuffer] to capture offscreen your
> scene.
> The problem is to send back your texture produce by [gemframebuffer] in
> pix_ domain to use [pix_movement] and [pix_multiblob], fortunately there
> is [pix_snap] for this (this process is quite slow, it depends on your
> hardware).
> Look at :
> Help => Gem => examples => 04.pix/ => 26.framebuffer_readback.pd
> to see how to use it.
>
> A note, instead off [curve3d] it is also possible to use shaders (on
> fragment) to do the correction of the lens distorsion.
> ++
>
> Jack
>
>
>
> Le 17/07/2019 à 20:36, Csaba Láng a écrit :
> > Looks good, but now a bigger problem came up.
> >
> > My aim is to correct the fish eye distortion for pix_movement and
> > pix_multiblob analyses.
> > Which means first I have to make the curve3d correction and then use
> > those pixels in pix_multiblob.
> > Is it possible?
> >
> > On Wed, Jul 17, 2019 at 8:16 PM Johnny Mauser
> > <joson.android at googlemail.com <mailto:joson.android at googlemail.com>>
> wrote:
> >
> >     Maybe gems [curve3d]?
> >
> >     Csaba Láng <langcsaba at gmail.com <mailto:langcsaba at gmail.com>>
> >     schrieb am Mi., 17. Juli 2019, 20:10:
> >
> >         Hi list,
> >         is there an easy way to correct fish eye camera image distortion?
> >         I think if a vortex kind of tool.
> >         Best,
> >         Popesz
> >         _______________________________________________
> >         Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at> mailing list
> >         UNSUBSCRIBE and account-management ->
> >         https://lists.puredata.info/listinfo/pd-list
> >
> >
> > _______________________________________________
> > Pd-list at lists.iem.at mailing list
> > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> >
>
>
>
>
> _______________________________________________
> Pd-list at lists.iem.at mailing list
> UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20190717/db320172/attachment.html>